Keyless padlock.



W. T. BURGESS.

KEYLESS PADLOCK. /xPPLlcAxN FILED APR. ao. 1915.

Patented Aug. 3, 1915.

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vn STATES raranr WILLIAM fr. nunc'fnss, or caowvILLE, LOUISIANA. p

KEYLESS PADLOCK.

specification of Letters Patent.

Patented Aug. a, .1915.

Application filed April so, 1,915. serial No. 25,009.

. tion of the invention, such as will enable others skilled in the art to `which it appertains to make and use the same. f

The invention relates to improvements in locks. f l f The object of the present invention isfto improve the construction of locks andjtoprovide a keyless pad lock of simple and com-y paratively inexpensive construction equipped with a pivoted shackle and locking means f engaging the shackle and releasable by practically concealed operatingmeans.,

With these andi other objects in viewthe invention consists in the construction and novel combination and arrangement `of' parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it beingunderstood that various changesin the form, proportion and` minor details oficonstruction may be resorted to without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawing Figure l is anelevation of a keyless pad lock constructedin accordance with this invention, Fig. 2 is a plan view of the same, Fig.`8` is averticallongi-r tudinal sectional view of the pad locki1lustrating the arrangement of the parts when vided with a face plate 2 the shackle is locked, Fig. 4 is horizontal sectional view on the line -a of Fig. 3. Fig. 5 is a side elevation of a keyless pad lock showing another form of the invention, Fig. 6 is a plan View of the same, F ig.y 7 is a vertical longitudinal sectional view of the pad lock shown in Fig. 5, the parts being locked, Fig. 8 is a horizontal sectional view on the line 8-8 of Fig. 7.

Like numerals of reference designate corresponding parts in all the gures of the drawing.

In the accompanying drawing in which is illustrated the preferred embodiment of the invention, l designates a lock casingy prosecured by rivets 3 or other suitable fastening devices to the body of the casing which is provided at the top with front and rea-r openings 4 and 5 for a pivoted by a transverse pin or rivet located near the rear end 8 yof the shackle which projectsslightly beyond the pivot 7 to form a heel. f The heel yor end 8 is engaged byya spring `9 securedat one end 10 by a rivetor other suitable fastening device to the casing and bearing at an intermediate point against the stud 11 and having its free end engaging the said heel or end 8 of the shackle and adaptedto swing thelatteropen automatically as soon as the shackle is released by a'l catch 12. The casing is provided with a chamber 13 to receive the lock mechanism and the said chamber has an inclined front wall 14 to whichi is secured the catch 12. The catch l2 consists of a spring riveted or otherwise fastened at its lower end 15 to the said inclined front wall 14and provided at itsupper freeA end with a headlG beveled at the front' and' shouldered at the inner portion to engage a corresponding head or catch 17 of thefree end ofthe shackle 6.- Theresilient catch isl adapted to engage they head or catch'of the shackle 6 automatically when the latter is moved to its closed position against the action of 1 the spring.l 9. The fronty wall 14 is intersected by a passage 18 extendingy upwardly from the bottom of the lock and receiving a slidable operating bar or member 19 provided at its inner or upper end with ga wedge or camhead 20 havinga rounded inner face which is arrangedto engage a concaved face 2l of an intermediate enlargement22of the catch l2wherebywhen the slidable operating member is moved inwardly it will force the catch backWardly out of engagement with the shackle and permit the same to be automatically opened by the spring 9. The front plate is provided at the center with a key hole 22 which is designed to mislead a person not familiar with the construction of the keyless pad lock.

In Figs. 5 to 8 inclusive of the drawing is illustrated another form ofthe invention in which the lock casing 23 is in the form of a mans head but it may be of any other orna mental configuration. The casing 23 is provided with a chamber 24 having a front wall intersected by a passage 25 extending upwardly and inwardly at an inclination from the bottom of the nose portion 26 and receiving a slidable downwardly tapered operating bar or member 27 which has a tapered or wedge shaped upper end 28 adapted to engage a catch 29. The downwardly tapered pivoted shackle 6. The shackle: is

operating serve to movement downward or outward movement of the bar or member 19 being limited by the head thereof engaging the inner wall at the upper end of the passage 18. Any other suitable means, however, limiting the outward movement ofv either of the operating bars or members. The catch 29 consists of a spring riveted orotherwise secured at its lower or inner portion to the front wall of the casing and provided at its upper end with a catch 30 for engaging a catch 31 of a shackle 32 pivoted adjacent to its rear end 33 by a pin34 or other suitable fastening device. The inner or rear end 33 constitutesa heel and is engaged by a spring 35 having its free end bearing against the shackle and secured at its other end 36 and bearing at an intermediate point against 'the stud 37. The casing 23 is provided with'a key hole 38 which is preferably arranged to present the form of an ear.

It will be seen that the keyless pad lock is exceedingly simple and inexpensive in construction and that a person not familiar with the construction of the lpad lock will find considerable diiculty in opening the same. Also it will be apparent that a person familiar-with the construction ofthe keylesspad lock may quickly operate the latter torelease the shackle so that the lock may be quickly applied in position for engagement with the part-to be locked.

What is claimedis 1. A lock ofthe class described includ-k ing a casing having a chamber and provided with a passage intersecting one of the walls of the chamber, a pivoted shackle, a catch secured within the chamber adjacent to the said passage and arranged to engage the Copies of this patent may be obtained for bar or member 27 and passage 25` limit the outward or downward ofthe said bar or member, they v casing may be employed fory `of'the casing, being provided at its inner end with a subshackle, and an operating bar or member arranged to slidale in the passage and move the catch out of engagement with the shackle to release the latter, said operating bar or member being concealed ywithin the and having its outer end arranged substantially flush with the adjacent portion of the exterior surface of the casing.

2. A lock of the class described including a casing provided with a passage terminating at one end at the exterior of the casing, a pivoted shackle, a catch mounted within the casing and arranged to engage the pivoted shackle, 'and an operating bar or member slidable in the'passage and having its outer, end arranged substantially flush with the adjacent portion ofk theexterior surface said operating bar or member stantially wedge-shape-portion arranged to engageithe catch for forcing the latterv out of engagement with the shackle.

3. A lock of the class described including a casing, a pivoted arrangedto engage the shackle and locked in its closed position, `Vsaid catch being provided. at Van intermediate point with a taperedenlargement presenting a concaved face and an operating bar or member slidable in the casingand provided with a wedge or a cam yhead arranged to engage the enlargement to force thecatch out of engagementwith the shackle, said bar or member operation.-

In testimony whereof I affix my signature in presence of: two witnesses.y

five cents eachflbydaddressing the Commissioner of Patents,

shackle, a resilient catch s' having one of its ends arranged for exteriory j 1 

